Articles tagged with Transition Metal Dichalcogenides
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Researchers at Rice University have discovered that light can trigger a physical shift in atomic lattice, creating tunable behavior and properties in transition metal dichalcogenide (TMD) materials. This effect could advance technologies using light instead of electricity, such as faster computer chips and ultrasensitive sensors.
Scientists have successfully measured ultrafast electric fields using a diamond nonlinear probe, achieving femtosecond temporal and nanometer spatial resolution. This breakthrough enables the detection of local electric field dynamics near surfaces with unprecedented precision.
Researchers at Seoul National University outlined a comprehensive roadmap for the 'gate stack' engineering of 2D transistors, a promising next-generation semiconductor device. The study provides a systematic development roadmap for both academia and industry.
Researchers at the University of Pennsylvania have discovered a way to synthesize new multi-metal 2D materials by adding up to nine metals into the mix. This finding opens up possibilities for designing materials with precisely controlled properties for diverse applications.
A team of materials scientists at Rice University developed a new way to grow ultrathin semiconductors directly onto electronic components using chemical vapor deposition. The breakthrough technique eliminates the fragile manufacturing step, potentially speeding up development of next-generation electronics and computing.
Researchers detect anomalous Hall effect in collinear antiferromagnets with non-Fermi liquid behavior, revealing a 'virtual magnetic field' that boosts the phenomenon. The findings open up new possibilities for information technologies and require further experimental confirmation.
Researchers from Tsinghua University sent 2D materials and field-effect transistors into orbit aboard China's reusable recoverable satellite, Shijian-19. The materials maintained their structural integrity, exhibiting stable switching characteristics after a 14-day space flight.
Recent study on 2M-WS2 reveals coexistence of striped surface charge order with superconductivity, modifying spatial distribution of Majorana bound states. Experimental results demonstrate that surface charge order does not destroy bulk topology but can modify MBS positions.
German physicist Christian Schneider has been awarded a European Research Council Consolidator Grant to study the optical properties of two-dimensional materials. His team plans to develop experimental set-ups to investigate the unique properties of these materials, which could lead to new applications in quantum technologies.
Researchers investigate defects in 2D materials, finding that some can improve electrical conductivity and shedding light on a common defect related to missing chalcogen atoms. Understanding these defects is crucial for refining processes needed to create precise TMD-based semiconductors.
Researchers from Lehigh University have developed a material that promises over 190% quantum efficiency in solar cells, exceeding the theoretical limit for silicon-based materials. The material's 'intermediate band states' enable efficient absorption of sunlight and production of charge carriers.
Researchers at Tokyo Metropolitan University have developed a novel approach to create nanoscrolls with improved control over nanostructure. The team achieved tight rolls with scrolls up to five nanometers in diameter and multiple microns in length, opening doors for new applications in catalysis and photovoltaic devices.
Researchers developed a UV-sensitive tape that can transfer 2D materials like graphene with ease, reducing damage and increasing efficiency. The new technology allows for flexible plastics to be used in device substrates, expanding potential applications.
Researchers have engineered a range of new single-walled transition metal dichalcogenide (TMD) nanotubes with different compositions, chirality, and diameters. The ability to synthesize diverse structures offers insights into their growth mechanism and novel optical properties.
Researchers found that changing the stacking order of layers in transition metal dichalcogenide (TMD) semiconductors creates new optoelectronic devices with tailor-made properties. The study reveals dark excitons exclusively located in the top layer, which can be utilized for optical power switches in solar panels.
A research team at City University of Hong Kong has developed a highly efficient electrocatalyst that enhances hydrogen generation through electrochemical water splitting. The catalyst, composed of transition-metal dichalcogenide nanosheets with unconventional crystal phases, exhibits superior activity and stability in acidic media.
Scientists have successfully fabricated centimeter-scale transition metal dichalcogenide field-effect transistors with low ohmic contact resistance close to the quantum limit. The devices exhibited an ultrahigh current on/off ratio of ~10^11 at 15 K, outperforming previous values.
Researchers at Brookhaven Lab's Center for Functional Nanomaterials have created a new layered structure with unique energy and charge transfer properties. The discovery could lead to advancements in technologies such as solar cells and optoelectronic devices.
A team of researchers at the University of Washington has discovered a way to imbue bulk graphite with physical properties similar to those of graphene, a single-layer sheet. This breakthrough could unlock new approaches for studying unusual and exotic states of matter and bring them into everyday life.
Lancaster University researchers have developed a novel scanning thermal microscopy approach to directly measure the heat conductivity of two-dimensional materials. This breakthrough enables the creation of efficient waste heat scavengers generating cheap electricity, new compact fridges, and advanced optical and microwave sensors and ...
Researchers propose a device design that can take the efficiencies of 2D TMDC devices from 5% to 12%, doubling the weight-saving potential. This breakthrough could address the energy supply challenges in space exploration and settlements, where traditional solar cells are too heavy to be transported by rocket.
Scientists have successfully engineered multi-layered nanostructures of transition metal dichalcogenides to form junctions, enabling the creation of tunnel field-effect transistors (TFETs) with ultra-low power consumption. The method is scalable over large areas, making it suitable for implementation in modern electronics.
Researchers at Max Born Institute have developed a hybrid laser pulse that controls ultrafast light-induced currents in giant materials. This breakthrough enables the creation of valley-currents and spin-currents, vital for future valleytronics technology.
Scientists have directly observed ultrafast motion of nonequilibrium excitons in monolayers WSe2, MoWSe2, and MoSe2, traveling at least 200 nm within 1 ps. This 'superdiffusion' process could break the traditional limitation of photovoltaic efficiency and be used for ultrafast electronic devices.
Australian researchers have engineered a quantum box for polaritons in a two-dimensional material, achieving large polariton densities and a partially 'coherent' quantum state. The novel technique allows researchers to access striking collective quantum phenomena and enable ultra-energy-efficient technologies.
Scientists at Swinburne University of Technology and FLEET collaborators observe and explain signatures of Fermi polaron interactions in atomically-thin WS2 using ultrafast spectroscopy. Repulsive forces arise from phase-space filling, while attractive forces lead to cooperatively bound exciton-exciton-electron states.
Scientists observed fine-scale exciton dynamics in atomically thin layered materials, confirming theoretical predictions. The discovery could help replace charge transfer for faster and more reliable optical communications.
Researchers have found a way to control spin in Hafnium diselenide, a material that could lead to more efficient spintronics. This discovery provides an entirely new route towards generating spin-polarised currents from transition metal dichalcogenides.
Scientists develop a method to produce atomically thin seams of light using in-plane heterostructures, enabling customizable strain and circularly polarized light. This technology has the potential to create efficient and chiral electroluminescence for applications in quantum optoelectronics.
Tiny molybdenum diselenide crystals have been found to exhibit ultrafast overtone signals due to phonon-mediated intervalley scattering processes. The study uses pump-probe spectroscopy and first-principles calculations to uncover the underlying physics.
Rice chemists adapt flashing process to synthesize pure boron nitride and boron carbon nitride flakes with varying degrees of carbon. The flakes show promise as an effective anticorrosive coating, protecting copper surfaces up to 92% better than traditional compounds.
A research team from City University of Hong Kong has developed an efficient electrochemical intercalation method to produce high-yield mono- or few-layer transition metal dichalcogenide (TMD) nanosheets. The new strategy offers a higher degree of control over lithium insertion and can be scaled up for industrial applications.
Researchers develop new epitaxial growth mechanism to achieve large-scale single-crystal WS2 monolayers, overcoming a crucial hurdle in replacing silicon with 2D materials. The technique enables uniform alignment of small crystals and leads to the successful growth of wafer-scale single-crystals of WS2, MoS2, WSe2, and MoSe2.
The study introduces a versatile method to tune the interaction strength in 2D heterostructures by applying electrical fields. This allows for the exploration of wide parameter ranges and opens up new perspectives for quantum simulation.
A new study proves that ultra-short pulses of light can drive transitions to new phases of matter in tungsten disulfide (WS2) atoms, aiding the search for future low-energy electronics. The findings show that even ultrashort pulses are as effective in triggering state changes as continuous illumination.
Australian researchers have made a significant step towards ultra-low energy electronics by demonstrating the dissipationless flow of exciton polaritons at room temperature. The breakthrough involves placing a semiconductor material between two mirrors, allowing the excitons to propagate without losing energy.
Berkeley Lab researchers developed a method to increase the efficiency of LED devices by applying mechanical strain to thin semiconductor films. This approach reduces exciton annihilation, allowing for high-performance LEDs even at high brightness levels.
Researchers at Berkeley Lab and UC Berkeley capture the first direct image of quantum spin liquid particles, called spinons and chargons. The discovery advances research on quantum computing and exotic superconductivity.
Researchers discovered giant optical anisotropy in molybdenum disulfide crystals, enabling compact photonic devices and waveguides. The material's birefringence value is several times greater than previous record-breakers.
Assistant Professor Nirmal Ghimire is working to synthesize and characterize topological materials. He received $48,910 in US Department of Energy funding for this research.
Researchers from NUS created a library of atomically thin 2D materials by intercalating metal atoms between transition metal dichalcogenide monolayers. The new materials have ferromagnetic properties and can be used to explore a wide range of physical properties.
Researchers from the University of Warsaw developed a method to grow transition metal dichalcogenide monolayers with excellent optical properties on atomically flat boron nitride substrates. The technique, using molecular beam epitaxy, overcomes previous limitations and allows for large-scale production of high-quality monolayers.
Researchers at Kanazawa University develop a scanning electrochemical cell microscopy technique to engineer the catalytic properties of 2D transition metal dichalcogenides. The study reveals changes in catalytic activity at edges, terrace features and heterojunctions, which agrees with previous reports.
Researchers have clarified a new synthesis mechanism for transition metal dichalcogenides (TMD), a type of semiconductor atomic sheet. The breakthrough enables the large-scale integration of atomic-order materials, paving the way for next-generation flexible electronics.
Researchers have isolated single-layer NbSe2 as a genuine 2D electronic phenomenon exhibiting spatial modulation of electron density and atomic lattice. The material remains a superconductor with critical temperature TC = 1.9 K despite dimensional reduction.
The project aims to synthesize different atomically thin two-dimensional semiconducting layers, which possess novel properties. The team will investigate the electronic properties of transition metal dichalcogenides in various layer configurations, with potential applications in photovoltaics and photoelectronics.
Researchers at Northwestern University have developed a method to isolate atomically thin sheets of molybdenum disulfide (MoS2), a promising material for optoelectronics and electronics. The process uses copolymer-assisted gradient ultracentrifugation, allowing for scalable isolation of single-layer, bilayer, or trilayer MoS2 sheets.
Scientists at Lawrence Berkeley National Laboratory have recorded the first observations of strong nonlinear optical resonances along the edges of a single layer of molybdenum disulfide. These one-dimensional edge states are key to enabling novel nanoelectronics and photonic devices.
Researchers discovered a unique new two-dimensional semiconductor, rhenium disulfide, with direct-bandgap properties. The material's weak interlayer coupling makes it ideal for studying 2D physics and applications in tribology, solar cells, and valleytronics.